summaryrefslogtreecommitdiff
path: root/arch/s390/pci/pci_debug.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/pci/pci_debug.c')
-rw-r--r--arch/s390/pci/pci_debug.c158
1 files changed, 106 insertions, 52 deletions
diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c
index 75c69b402e05..c7ed7bf254b5 100644
--- a/arch/s390/pci/pci_debug.c
+++ b/arch/s390/pci/pci_debug.c
@@ -1,12 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright IBM Corp. 2012
+ * Copyright IBM Corp. 2012,2015
*
* Author(s):
* Jan Glauber <jang@linux.vnet.ibm.com>
*/
-#define COMPONENT "zPCI"
-#define pr_fmt(fmt) COMPONENT ": " fmt
+#define pr_fmt(fmt) "zpci: " fmt
#include <linux/kernel.h>
#include <linux/seq_file.h>
@@ -23,52 +23,119 @@ EXPORT_SYMBOL_GPL(pci_debug_msg_id);
debug_info_t *pci_debug_err_id;
EXPORT_SYMBOL_GPL(pci_debug_err_id);
-static char *pci_perf_names[] = {
- /* hardware counters */
+static char *pci_common_names[] = {
"Load operations",
"Store operations",
"Store block operations",
"Refresh operations",
+};
+
+static char *pci_fmt0_names[] = {
"DMA read bytes",
"DMA write bytes",
- /* software counters */
- "Allocated pages",
+};
+
+static char *pci_fmt1_names[] = {
+ "Received bytes",
+ "Received packets",
+ "Transmitted bytes",
+ "Transmitted packets",
+};
+
+static char *pci_fmt2_names[] = {
+ "Consumed work units",
+ "Maximum work units",
+};
+
+static char *pci_fmt3_names[] = {
+ "Transmitted bytes",
+};
+
+static char *pci_sw_names[] = {
"Mapped pages",
"Unmapped pages",
+ "Global RPCITs",
+ "Sync Map RPCITs",
+ "Sync RPCITs",
};
-static int pci_perf_show(struct seq_file *m, void *v)
+static void pci_fmb_show(struct seq_file *m, char *name[], int length,
+ u64 *data)
+{
+ int i;
+
+ for (i = 0; i < length; i++, data++)
+ seq_printf(m, "%26s:\t%llu\n", name[i], *data);
+}
+
+static void pci_sw_counter_show(struct seq_file *m)
{
struct zpci_dev *zdev = m->private;
- u64 *stat;
+ struct zpci_iommu_ctrs *ctrs;
+ atomic64_t *counter;
+ unsigned long flags;
int i;
+ spin_lock_irqsave(&zdev->dom_lock, flags);
+ ctrs = zpci_get_iommu_ctrs(m->private);
+ if (!ctrs)
+ goto unlock;
+
+ counter = &ctrs->mapped_pages;
+ for (i = 0; i < ARRAY_SIZE(pci_sw_names); i++, counter++)
+ seq_printf(m, "%26s:\t%llu\n", pci_sw_names[i],
+ atomic64_read(counter));
+unlock:
+ spin_unlock_irqrestore(&zdev->dom_lock, flags);
+}
+
+static int pci_perf_show(struct seq_file *m, void *v)
+{
+ struct zpci_dev *zdev = m->private;
+
if (!zdev)
return 0;
- if (!zdev->fmb)
- return seq_printf(m, "FMB statistics disabled\n");
+
+ mutex_lock(&zdev->fmb_lock);
+ if (!zdev->fmb) {
+ mutex_unlock(&zdev->fmb_lock);
+ seq_puts(m, "FMB statistics disabled\n");
+ return 0;
+ }
/* header */
- seq_printf(m, "FMB @ %p\n", zdev->fmb);
seq_printf(m, "Update interval: %u ms\n", zdev->fmb_update);
seq_printf(m, "Samples: %u\n", zdev->fmb->samples);
seq_printf(m, "Last update TOD: %Lx\n", zdev->fmb->last_update);
- /* hardware counters */
- stat = (u64 *) &zdev->fmb->ld_ops;
- for (i = 0; i < 4; i++)
- seq_printf(m, "%26s:\t%llu\n",
- pci_perf_names[i], *(stat + i));
- if (zdev->fmb->dma_valid)
- for (i = 4; i < 6; i++)
- seq_printf(m, "%26s:\t%llu\n",
- pci_perf_names[i], *(stat + i));
- /* software counters */
- for (i = 6; i < ARRAY_SIZE(pci_perf_names); i++)
- seq_printf(m, "%26s:\t%llu\n",
- pci_perf_names[i],
- atomic64_read((atomic64_t *) (stat + i)));
+ pci_fmb_show(m, pci_common_names, ARRAY_SIZE(pci_common_names),
+ &zdev->fmb->ld_ops);
+ switch (zdev->fmb->format) {
+ case 0:
+ if (!(zdev->fmb->fmt_ind & ZPCI_FMB_DMA_COUNTER_VALID))
+ break;
+ pci_fmb_show(m, pci_fmt0_names, ARRAY_SIZE(pci_fmt0_names),
+ &zdev->fmb->fmt0.dma_rbytes);
+ break;
+ case 1:
+ pci_fmb_show(m, pci_fmt1_names, ARRAY_SIZE(pci_fmt1_names),
+ &zdev->fmb->fmt1.rx_bytes);
+ break;
+ case 2:
+ pci_fmb_show(m, pci_fmt2_names, ARRAY_SIZE(pci_fmt2_names),
+ &zdev->fmb->fmt2.consumed_work_units);
+ break;
+ case 3:
+ pci_fmb_show(m, pci_fmt3_names, ARRAY_SIZE(pci_fmt3_names),
+ &zdev->fmb->fmt3.tx_bytes);
+ break;
+ default:
+ seq_puts(m, "Unknown format\n");
+ }
+
+ pci_sw_counter_show(m);
+ mutex_unlock(&zdev->fmb_lock);
return 0;
}
@@ -86,19 +153,17 @@ static ssize_t pci_perf_seq_write(struct file *file, const char __user *ubuf,
if (rc)
return rc;
+ mutex_lock(&zdev->fmb_lock);
switch (val) {
case 0:
rc = zpci_fmb_disable_device(zdev);
- if (rc)
- return rc;
break;
case 1:
rc = zpci_fmb_enable_device(zdev);
- if (rc)
- return rc;
break;
}
- return count;
+ mutex_unlock(&zdev->fmb_lock);
+ return rc ? rc : count;
}
static int pci_perf_seq_open(struct inode *inode, struct file *filp)
@@ -115,31 +180,23 @@ static const struct file_operations debugfs_pci_perf_fops = {
.release = single_release,
};
-void zpci_debug_init_device(struct zpci_dev *zdev)
+void zpci_debug_init_device(struct zpci_dev *zdev, const char *name)
{
- zdev->debugfs_dev = debugfs_create_dir(dev_name(&zdev->pdev->dev),
- debugfs_root);
- if (IS_ERR(zdev->debugfs_dev))
- zdev->debugfs_dev = NULL;
-
- zdev->debugfs_perf = debugfs_create_file("statistics",
- S_IFREG | S_IRUGO | S_IWUSR,
- zdev->debugfs_dev, zdev,
- &debugfs_pci_perf_fops);
- if (IS_ERR(zdev->debugfs_perf))
- zdev->debugfs_perf = NULL;
+ zdev->debugfs_dev = debugfs_create_dir(name, debugfs_root);
+
+ debugfs_create_file("statistics", S_IFREG | S_IRUGO | S_IWUSR,
+ zdev->debugfs_dev, zdev, &debugfs_pci_perf_fops);
}
void zpci_debug_exit_device(struct zpci_dev *zdev)
{
- debugfs_remove(zdev->debugfs_perf);
- debugfs_remove(zdev->debugfs_dev);
+ debugfs_remove_recursive(zdev->debugfs_dev);
}
int __init zpci_debug_init(void)
{
/* event trace buffer */
- pci_debug_msg_id = debug_register("pci_msg", 16, 1, 16 * sizeof(long));
+ pci_debug_msg_id = debug_register("pci_msg", 8, 1, 8 * sizeof(long));
if (!pci_debug_msg_id)
return -EINVAL;
debug_register_view(pci_debug_msg_id, &debug_sprintf_view);
@@ -150,7 +207,7 @@ int __init zpci_debug_init(void)
if (!pci_debug_err_id)
return -EINVAL;
debug_register_view(pci_debug_err_id, &debug_hex_ascii_view);
- debug_set_level(pci_debug_err_id, 6);
+ debug_set_level(pci_debug_err_id, 3);
debugfs_root = debugfs_create_dir("pci", NULL);
return 0;
@@ -158,10 +215,7 @@ int __init zpci_debug_init(void)
void zpci_debug_exit(void)
{
- if (pci_debug_msg_id)
- debug_unregister(pci_debug_msg_id);
- if (pci_debug_err_id)
- debug_unregister(pci_debug_err_id);
-
+ debug_unregister(pci_debug_msg_id);
+ debug_unregister(pci_debug_err_id);
debugfs_remove(debugfs_root);
}
generated by cgit (git 2.34.1) at 2025-12-22 00:10:46 +0000